I went with the JT and have dyno before/after numbers (below--I think I've traced the dip down to a hiccup in the wastgate, which it isn't doing anymore). For me the initial benefit was that it added another 500 rpm or so of extremely useable power at the very top. It's been 4 months or so and I still accidently bump into the rev limit pretty frequently because the thing just keeps pulling.

Generally, a bigger diameter exhaust will lessen the low-end torque but improve the high end power output. The other day I read about a guy who ran a full 3", didn't like the results, and ended-up putting a 2.5" tip at the back to recover some of his previously lost low-end torque. That said, I'm extremely happy with the full 3"--and the dyno agrees with my pants-seat and shows I haven't lost a bunch of torque (I am running a single cat).

How far do you plan to go with your car?

Come to the dyno day on 12/4 and I'll give you a ride if you want to take a listen--it's not too bad, not Civic-esque or buzzy, but I wouldn't exactly call it a rumble. :)

I need to call Dave in Houston (who owes me a plate of bar b que anyway) and see if he will come-out with his 2.3 Viggen so maybe you can hear that too. I believe he is running with a removed first muffler and a single cat--and his car sounds great (better than mine I think), which might acutally give you a better idea what less restriction sounds like with your engine than mine would at only 2.0 L and lower compression.



posted by 67.10.24...

• Exhaust upgrades (regardless of model!), Patrick (Houston), Mon, 15 Nov 2004 19:03:56
  • Remus here, dip, Tue, 16 Nov 2004 07:32:39
  • Re: B234R w/JT downpipe, CarSound/Magnaflow..., zeke, Tue, 16 Nov 2004 04:05:28
    • The tail-pipe on my JT is rusting at the joint between, Bill Davies, Tue, 16 Nov 2004 10:02:59
      • Bill, I don't have the JT muffler or tail-pipe..., zeke, Tue, 16 Nov 2004 10:21:41
        • Flex-pipe, Pa Taket, Wed, 17 Nov 2004 04:03:38
          • The stock flex-pipe wil bolt-up to the rear of..., zeke, Wed, 17 Nov 2004 05:19:02
            • That's what I figured you were doing!, Pa Taket, Wed, 17 Nov 2004 05:57:20
              • If Bo' waits much longer, he could...., zeke, Wed, 17 Nov 2004 06:37:41
                • Descending Dollar, Pa Taket, Wed, 17 Nov 2004 10:46:22
        • Hi, Zeke - didn't read your post properly! Wasn't, Bill Davies, Tue, 16 Nov 2004 13:34:29
  • I vote for the Saab/Remus system...., MI-Roger , Tue, 16 Nov 2004 03:53:49
  • Remus by far, daveship, Tue, 16 Nov 2004 02:43:42
  • Re: Exhaust upgrades (regardless of model!), Dean, Mon, 15 Nov 2004 21:47:29
    • Speedparts through Nick has been good to me, Drew in Houston, Mon, 15 Nov 2004 22:15:46
      • user error?, Dean, Tue, 16 Nov 2004 09:31:37
        • Re: user error?, Drew in Houston, Tue, 16 Nov 2004 17:30:28
          • Re: user error?, Drew in Houston, Tue, 16 Nov 2004 18:10:18
      • I made my own with 3 inch mandrel bends front to back, jak , Tue, 16 Nov 2004 06:30:10
  • Re: Exhaust upgrades (regardless of model!), Drew in Houston, Mon, 15 Nov 2004 21:10:45 <-- Viewing This Message
    • my feelings on BIG pipe :-), jak , Tue, 16 Nov 2004 18:50:34
      • Well, I went with the 3" because I kind of figured, Drew in Houston, Tue, 16 Nov 2004 20:58:40
        • Big, low, rumbly sounds....., zeke, Wed, 17 Nov 2004 05:31:22
    • Been meaning to call you about that..., Dave in Houston, Tue, 16 Nov 2004 07:29:19
  • Re: Exhaust upgrades (regardless of model!), Talladega900, Mon, 15 Nov 2004 19:20:20

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